Plus, make sure to get your cabinet volumes and alignm. 2 cubic foot box with a 24 Hz tuning frequency for our vented enclosure. A force to be reckoned with, our SE Pro subwoofer series utilizes high-end materials and innovative technology to deliver vibrantly compelling sound. Have original box and packaging. 625 cubic feet, and the recommendation for an eight-inch speaker is 0. Difficulty Level First, a few links you may enjoy: Dayton SA1000 Subwoofer Amplifier A truly fine subwoofer amplifier. Jul 11, 2014 - Enclosure Volume Calculator - Subwoofer Box Calculator. The formulas for calculating the minimum vent diameter, and the port(s) length for subwoofer enclosures can be found here - round and square vents. Q: "How critical is the placement of the port(s) in an enclosure?" To understand the sensitivity of a vented (ported) speaker to the location of the vent it is first necessary to understand why it would matter at all. im having trouble figuring out the port as on my cut sheet it says on a 30x17x9. 5" Bedliner Spray Car Speaker Box Enclosures, Pair. The BoxAdvisor is our recommended subwoofer enclosure database. Ported designs require tuning. I've searched around, but haven't found much. 1997-2004 DODGE DAKOTA CREW CAB TRUCK DUAL SUB BOX $139. WinISD recommends a 3. Vented Ported Subwoofer Box Equations Formulas Design Calculator Low Frequency Enclosures - Car Audio - Home Theater Sound System. com/ebsis/ocpnvx. High tuned boxes are what you hear at Best Buy and Circuit City. Based on the subwoofer's max CEA output vs frequency and distortion capabilities we measure, it is. Bbox E10S Pro-Series 10" Single Sealed / Wedge Shape Subwoofer Enclosure. 5 out of 5 stars 220. Both Small and Dickason developed port area formulas decades ago based on cone displacement. Obviously the quality of the actual drivers and associated cabinet and amp circuitry makes a difference as well. The calculation of sealed, bass-reflex, bandpass boxes by Thiele-Small parameters. Bassaholic Subwoofer Room Size Rating Protocol by Gene DellaSala — August 30, 2011. 1-channel configuration, the center, front, and surround speakers are in the same location as they are in a 5. For my uses, a sub doesn't need it to do anything but woof in a very tight band. On the other hand it is build with high quality materials that won’t fall apart under severe use or strain. The Best Homewyse Labor Cost Calculator Free Download. This is the first spot I recommend you try as a listening position. You want a ported box to be tuned low if you want SQ. im having trouble figuring out the port as on my cut sheet it says on a 30x17x9. #N#Get help for the Sealed vs. Peak particle velocity with that amp and driver, in a box under 2. Installing your monster size speakers can now be done easily and quickly keeping your vehicle’s space in mind. The slot port offers you the largest amount of port area that consumes the least amount of baffle board space. 67 cubic feet. Official website of the brand Deaf Bonce, including series Apocalypse, Doomsday, Machete, Hannibal. Yesterday we covered the basics of ports in speaker boxes that would otherwise be called sealed boxes were it not for the hole and associated tube punched into the speaker box to extend the bass. #N#Because Nothing Beats the sound of RE Audio amplifiers, speaker systems, and subwoofers. Authorized Dealers with access can alter design parameters and plot responses. Difficulty Level First, a few links you may enjoy: Dayton SA1000 Subwoofer Amplifier A truly fine subwoofer amplifier. I'm planning on a steep 50 hz hi pass on it and feeding it 125 and below. 8 inch subwoofer boxes. Monitor Audio and PSB both offer several twin-ported models with foam plugs so you can damp the bass alignment four different ways. D = Minimum Port Vent Diameter V = Maximum Air Volume F = Tuning Frequency N = Number of Ports. You either need to sacrifice output by going with a smaller diameter port, or sacrifice low end extension by going with a higher tuned port. Anything above 45hz is going to sound horrible, 35 is the absolute highest I'd tune a ported box for with a SQL application. 13inBut when you change the option of slot port fro. Ported Calculator. Calculating port area with xmax? Welcome to the SMD forum! Archived. Add a thump to your sound system by shopping online for Subwoofers at Amazon India. The calculation of sealed, bass-reflex, bandpass boxes by Thiele-Small parameters. " The utility simply calculated net enclosure volumes and port dimensions off one 'alignment'. 2005-2019 TOYOTA TACOMA DOUBLE CAB TRIPLE SUB BOX $149. The formulas for calculating the minimum vent diameter, and the port(s) length for subwoofer enclosures can be found here - round and square vents. Also, the same generally goes with port area, there is a ballpark number to aim for, but it will depend on the environment and subwoofer specs. Use the largest diameter port as the design allows. Empty Golf Cart Subwoofer Box - Universal (POD8-35) PRICE: $ 249. He takes us step by step on determining port area when designing ported sub enclosures. A 10 ohm 1% resistor. mf tex03/dist/cm/accent. The "Minimum Diameter" box is for round ports. This should allow you to extend part of the port tube outside the enclosure without it being visible. #N#Slotted Port Surface Area in Square Inches. A ported enclosure uses a vent (also referred to as a port) for the reinforcement of low bass response. On the other hand it is build with high quality materials that won’t fall apart under severe use or strain. There would only be as many chambers as there are subwoofers. Pros: Can be even more efficient than a single reflex band pass; excellent dampening at resonance, increased power handling at resonance. If you're a car audio enthusiast, you already know that a subwoofer is only as good as its enclosure, and VMInnovations has all of the subwoofer enclosures and boxes you need to let your bass boom. See “Why Go Ported”. Calculate the tuning frequency (F) for the subwoofer box?. mf *** tex98/dist/cm/accent. As with a ported box, the port area and length will greatly affect output and frequency response as well as quality and the reliability of the speaker. Latest updates on everything Subwoofer Inputs Software related. This top-notch product by QPower will help maximize performance of your subwoofer, while offering it additional protection from external impact. Ported boxes can be different sizes and Ported boxes can be different sizes and it the size will have a great effect on overall sound, performance, and durability of the woofer. A simple change in the net volume of the box, a change from sealed. Bluprint - Woodworking Get 3 10 Subwoofer Box Ported Plan Se De Color At: Learn techniques & deepen your practice with classes from pros. height multiplied by its width equals the 'port area' on the calculator. You can design Closed (Sealed), Ported or 4th Order Bandpass enclosure designs. Vented Ported Subwoofer Box Equations Formulas Design Calculator Low Frequency Enclosures - Car Audio - Home Theater Sound System. any help would be greatly appreciated!. Metra - 12" Dual Sealed Subwoofer Enclosure - Charcoal. As an input, it takes values of T/S Driver Parameters such as Vas (volume of air), Fs (frequency), Pe (Thermal power), Re (DC resistance of the voice coil), Qes (Electrical Q of loudspeaker), and Q of loudspeaker (Qts). Car Audio Single 12" Vented Subwoofer Stereo Sub Box Ported Enclosure 5/8" MDF. Peak particle velocity with that amp and driver, in a box under 2. King and George P. Filter Filter subwoofer. This sealed enclosure is the best subwoofer box design for deep bass. Be respectful, keep it civil and stay on topic. 13inBut when you change the option of slot port fro. RE Audio Bluetooth Car Amplifier. 1D having heard great things about it and reading specs. A ported speaker box allows airflow through the port in the box to create a louder bass sound without adding any other hardware to your sound system. Our subwoofers for cars and trucks range from: Mercedes subs, Lexus subs, Ford subs, Toyota subs, Nissan subs, and much more. 1 - Volume displacement. Get the best deals on 10" Car Speaker and Subwoofer Enclosures when you shop the largest online selection at eBay. Calculate the Required Amplifier Output Power. Determine the Dimensions of your Speaker Box based on the Calculated Volume. Q: "How critical is the placement of the port(s) in an enclosure?" To understand the sensitivity of a vented (ported) speaker to the location of the vent it is first necessary to understand why it would matter at all. Additional Resources. These Subwoofer Boxes are made with pride in our own facility here at HiFiSoundConnection. Unlike ported boxes, the cone excursion is reduced below the resonant frequency of the box and driver due to the added stiffness provided by the sealed box baffle. The larger the port, or the greater the number of ports the larger the amount of air being moved can be before it starts to make noise. 2015-UP F150 SUPER CREW DUAL 10 PORTED SUBWOOFER BOX $239. This page allow you to compare the different types of subwoofer box enclosures for a particular driver. Ported enclosures use a tuned port or vent to increase output at lower frequencies. E nter the number of ports you are using, the internal airspace of your box, then tuning frequency you wish to use, and then hit calculate button. This corresponds to a very long wavelength, which I calculate to be about 22 feet. It has one 10" driver and one makeshift 10" passive radiator. Dodge Ram Sub Box : Groove like never before while driving down the road! Get a Dodge ram sub box and listen to some great music. ETA Feb 27th Apocalypse DB-SA255 D1/D2. The port, and driver, are still fairly mis-matched to the room air. This tries one way and gives you a correct answer. I have been checking out box calculators to turn my sealed subs into ported ones. FREE 1-3 DAY DELIVERY WITH HASSLE-FREE, 30-DAY RETURNS! Fitment: Universal. These two methods involve the use of a port, generally made from a simple piece of PVC pipe, or a duct (sometimes called a slot port), which is normally constructed out of the same material the box is made of (normally wood). Unlike ported boxes, the cone excursion is reduced below the resonant frequency of the box and driver due to the added stiffness provided by the sealed box baffle. He takes us step by step on determining port area when designing ported sub enclosures. * - For the 2" Precision Port cut the center tube 5 inches shorter than the Flare Length Port Required value. We delete comments that violate our policy, which we encourage you to read. There is a delicate line to be walked between overstuffed cabinets with a lifeless over damped sound and understuffed cabinets with timing errors caused by delayed information from the out-of-phase cone rear surface entering the listening room via the cone or port, plus timbre inaccuracy caused by emphasis of specific frequencies. With Box Shot 3D you can create virtual boxes for your digital programs. Anything above 45hz is going to sound horrible, 35 is the absolute highest I'd tune a ported box for with a SQL application. Wide Variety of Lumber & Slabs! Turning Wood. Add to Cart. Ported enclosures provide more volume than sealed enclosures, but they tend to muddy the overall sound. 2005-2019 TOYOTA TACOMA DOUBLE CAB TRIPLE SUB BOX $149. 5 farad cap 0 gauge all the way including big 3. Im sure most people here have come across the 12-16 sq in of port area per cube guideline for slot ports and the 9-12 sq in per cube for aeros. SPL Vented/Ported Subwoofer Enclosure Box. Pioneer TS-WX300TA Sub-Woofer (Black) Generic 5 Inch Woofer Audio 30W Fever Hifi Sound Bass Unit Speaker. Rockville RSV15 15" Vented Car Audio Subwoofer Box 2. Authorized Dealers with access can alter design parameters and plot responses. " The utility simply calculated net enclosure volumes and port dimensions off one 'alignment'. You'll typically get more powerful bass from a ported enclosure without needing as much power. It is unbelievable for music and movies. GTX102 - 10" 700 Watts RMS Dual 2 Ohm Subwoofer. This app will help you design enclosure (box) for your car audiospeaker (sub woofer). Calculate Enclosure Volume or for Box Calculate Speaker Total at f s Calculate Air Compliance. A larger ported chamber will give a wider band of passed frequencies but will sacrifice output of the enclosure. Option is available if you have selected the box type - vented, and port type - slit. If you have a woofer and you need a speaker box, look no further, these boxes are cnc cut and professionally constructed with pride in the USA; Florida to be exact. org extension. 50 square inches, tuning frequency 36 Hz. Re: Isobaric subwoofer design, many questions! I pretty much agree with Jeff B, but if you were making a small sub, you could gain some extension. Planet Audio AC12D Car Subwoofer - 1800 Watts Maximum Power, 12 Inch, Dual 4 Ohm Voice Coil, Sold Individually Rockville REC97 Dual 12" Ported SUV Subwoofer Sub Box Enclosure - Behind 3rd Row BBox E12D 12-Inch Dual Sealed Carpeted Subwoofer Enclosure. We sell raw speaker drivers (tweeters, woofers, subwoofer, midrange drivers, full range drivers), speaker kits, amplifiers, capacitors, resistors, and inductors. Subwoofer box calculator online. Determine if your Driver works best in a Sealed or Ported Enclosure. However, port calculations have never been in accordance with real world measurements. 1’s so I went with another brand of 8’s in single 4 ohm voice coils that I had never used but the specs were good ( DS18 🤫 ) and elected for one1500. Gray 12" Dual Sealed Sub Box, Fits Chevy Silverado & GMC Sierra Ext-Cab 1999-2007. Resistors, cables or a coils that are being used to connect a loudspeaker show a DC resistance. The formulas used in the calculator create a design that suggests the most maximally flat response in an anechoic environment based on the number of drivers, the thiele small parameters and the allotted dimensions specified in the user's input fields. Free Skar Audio 10" Custom Aero Ported Sub Box VVX-10v3 IVX-10v2 SDR-10 Raw No Carpet. I was reading Ishtek, and realised how poorly my hard earned JBL and Eminence speakers were performing in the ported reflex bins I had made. 10 inch subwoofer boxes Sort Featured Price: Low to High Price: High to Low A-Z Z-A Oldest to Newest Newest to Oldest Best Selling Filter 10 Inch 10" 100-250 12 Inch 12 Inch Subwoofer Box 12" 37Hz 50-100 Bass Box Dual Dual 10" Dual 12 Inch Bandpass Subwoofer Box Dual 12 Inch Ported Subwoofer Box Dual 8 Subwoofer Box Dual Box Dual Ported Dual. Torres Box Tuning Calculator is a free program that allows you to calculate the box and port dimensions for your audio speaker. The result sonically is more “rumble” and deeper bass tone. Additional Resources. This means that if you sit 1 meter from the subwoofer and use 1 watt of power, the sub produces 93dB of volume output. GTX122 - 12" 700 Watts RMS Dual 2 Ohm Subwoofer. Vented Designer should give a good approximation of box parameters for most applications. The port length for ported enclosures The reference efficiency in both % and decibels at one watt If any of the fields return 'NAN' or 'infinity', you did not fill one of the fields required to make the calculations. Subwoofer Box Design Subwoofer Box Calculator Ported Subwoofer Box Sealed Subwoofer Box 12. Max output 101 dB, f3 35 Hz. com/ebsis/ocpnvx. Ports: In addition to the speaker portion of the subwoofer, some enclosures offer an additional port, which forces out more air, increasing bass response in a more efficient manner than sealed enclosures. Get the best deals on 10" Car Speaker and Subwoofer Enclosures when you shop the largest online selection at eBay. We are a leading Svs Sb 2000 Subwoofer discounter, find a wide Svs Sb 2000 Subwoofer deals for sale on Ebay. I want to build my first ported subwoofer box but I dont know how to measure or tune one. Enter your search terms Submit search form : Web: www. Model:TCPSP-212. Use plans that are entirely generated in CAD. Why is it that my sub manufacturer calls for a ported box be a certain cubic volume and the port to be a certain diameter and length and tune but every box calculator says something completely different not only different than the manufacturer but than every other box calculator, I also used all the subs t/s parameters why is it none of the. Scan-Speak now provides advanced parameters on their driver. You'll need 6dB more power to get to the same point in output. Refine by No filters applied Dual 10" Ported Vented Subwoofer Sub Box Enclosure for 2002-2017 Dodge Quad Cab. subwoofershopprice. Attention subwoofer fans! One-off Velodyne trade-in campaign until May 31, 2020 *. Rockville RQB12 SQ Single 12" Side Ported Solo Baric L7S/L7R Sub Box Enclosure. Between 50 & 90 either type would work. Our MDF subwoofer boxes can be customized for you with optional mounting depths and multiple carpet colors. 02 is an effective audio recording tool which allows you to calculate the amount of signal delay needed to time align the subwoofer and the two separate arrays of main speakers in the sound system at Abundant Grace. This is where the SB-4000 excels and the limitations of the size are pushed aside. Calculate import duty and taxes in the web-based calculator. Also, consider that the Subwoofer can absorb sustantial amounts of power; it is in your best interests to over rate the capability of your Subwoofers by at least 50% - for example, if you have a 200 watt per channel Power amp (at 8 ohms, for example), you should use Drivers that are capable of 300 watt transients at the same impedance the Power. Custom subwoofer enclosure build. "Ground Pounding" is what we are all about. Single 15 Inch PORTED Subwoofer Box Design. Just keep reading with open eyes and mind and you will easily. Then into the laboratory. Car Audio Single 12" Vented Subwoofer Stereo Sub Box Ported Enclosure 5/8" MDF. Input/Enter Known Values:. 625 cubic feet, and the recommendation for an eight-inch speaker is 0. Classifieds: DEALER AD - Space-Tech Lab. Re: How much poly-fill for sealed subwoofer? My box is 1. 5″ #N#Depth 2: 6. A lot goes into building a decent subwoofer than just throwing a speaker into a box. EDITTED 11/14/2017 : IF YOU ARE LOOKING FOR A CRAZY IN DEPTH TUTORIAL, THIS IS NOT IT. There are plenty of free online resources to help you with your vented box design, and Parts Express carries tubes of every shape and size, including adjustable length ports and flared ports. Also referred to as Bass reflex, ported enclosures are designed in such a way that the acoustics enable the sub to be more bassy. From 30hz up velocity will not exceed 10m/s at full output so music will be unaffected. This calculator will convert a circle port into square inches in order to build a slotted port for your woofer box. Build a ported box, sealed box for your low-frequency speaker. Comp 12-Inch Subwoofer Enclosure. Loudspeakers Calculator Free field frequency responses of the measured and the generalized loudspeaker (105 mm woofer, bass reflex port back) In the upper section of the calculator the reverberation time within the listening room is calculated depending on the construction, the size, and the furnishings of the room. Connectin a smart phone to the amps. some one can help me making ported enclosure for JBL W15GTI MKi keeping qtc. Plug in the known value of the external diameter (d). Fits Regular-Cab/Regular cab Trucks 10" Single Ported Sub Box. Play music with a lot of bass to verify the subwoofer is working. #N#Slotted Port Surface Area in Square Inches. Gray 12" Dual Sealed Sub Box, Fits Chevy Silverado & GMC Sierra Ext-Cab 1999-2007. Drivers greater than 10" in diameter can produce port noise due to the air movement. A subwoofer contains 2 vents of length 5 cm and diameter of 8 cm. The formulas used in the calculator create a design that suggests the most maximally flat response in an anechoic environment based on the number of drivers, the thiele small parameters and the allotted dimensions specified in the user's input fields. 5 farad cap 0 gauge all the way including big 3. After the box is assembled ,seal the inside seams using %100 silicone sealant (even in ported and band pass enclosures). Scan-Speak now provides advanced parameters on their driver. Cross section area can be defined as a multiple of Driver S d, so a pocket calculator is needed, or the actual dimensions or area can be input. We make custom subwoofer boxes for any vehicle or subwoofer you can imagine. The SEX v2 SERIES touts a totally new look with its completely redesigned motor and magnetic assembly. At low frequencies, increasing SPL requirements demand ever-greater woofer excursion from a sealed system, which limits output and can increase distortion. The 13” woofer is more than powerful enough to convey the drums and bass in everything I listened to. A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. Hopefully these speaker placement guidelines and tips have helped you come up with some ideas to improve your home theater or listening room without spending a dime this year. Bass completes music. 2009-2014 Ford F150 SuperCrew Sub Box Dual Ported $ 240. Refine by No filters applied Dual 10" Ported Vented Subwoofer Sub Box Enclosure for 2002-2017 Dodge Quad Cab. Question in titleIf a subwoofer is meant for a 1. Single DEEP SUB BOX-passenger 2015 Chevy Silverado / GMC Crew $120. Precision Port 3" Flared Speaker Cabinet Port Tube Kit The unique flared-end construction of the Precision Port™ system enables it to outperform any standard port tube on the market. Subwoofer box calculator online. Instead of reverberating in a fairly simple damped enclosure, sound from the back of the bass speaker is directed. See similar items. 2005-2019 TOYOTA TACOMA DOUBLE CAB TRIPLE 8" PORTED $249. Here is a good example of a port area calculator using those formulas: Car Audio - PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES Those calculators have a big flaw though, they assume you are going to be pushing a sub to its Xmax. There are designs for sealed/ ported boxes in single/dual speakers & subwoofers. 4th order enclosures are sometimes used to get bass out of a tightly sealed trunk. Video: Sealed and ported subwoofer boxes. If you have selected the port type - pipe, this parameter is automatically calculated. Mini-USB Transmits data and has one small, square tip. Method for finding the sweet spot. 10-inch subwoofer Box dimensions. 6 cubic ft ported enclosure, but let say I put it in a 1. *Vb rounded to nearest hundredths (x. View 13,000 Woodworking Plans here. Powerful, concussive, yet beautiful. For a 10-inch woofer, the volume recommendation is 0. Build a ported box, sealed box for your low-frequency speaker. Bluprint - Woodworking Get 8 Inch Subwoofer Box Plans Port Size Calculator: Learn The Art Of Woodworking Using These Step-by-Step Woodworking Plans. I worry that It would be easy to create a sub which has too much port noise. Stay safe and healthy. Why is it that my sub manufacturer calls for a ported box be a certain cubic volume and the port to be a certain diameter and length and tune but every box calculator says something completely different not only different than the manufacturer but than every other box calculator, I also used all the subs t/s parameters why is it none of the. Sizes: 10", 12", and 15" (Dual 2 or 4 ohm). Freespeakerplans. Also referred to as Bass reflex, ported enclosures are designed in such a way that the acoustics enable the sub to be more bassy. Overview: This is a calculator for designing a Dual Fold On-Axis Transmission Line Enclosure. Port Basics When tuning a ported enclosure, there are two widely used methods implemented. Resistors, cables or a coils that are being used to connect a loudspeaker show a DC resistance. 59 Cubic Feet. Subwoofer Box Enclosure Tuning Frequency Calculators: Enter value, select unit and click on calculate. I was reading Ishtek, and realised how poorly my hard earned JBL and Eminence speakers were performing in the ported reflex bins I had made. port area depends on the subwoofer(s) and the tuning frequency, each subwoofer is designed differently and will need its enclosure to be designed differently. 5 in Rectangle Vent Opening: (Height)1. ♦Air Volume: 2. The formulas used in the calculator create a design that suggests the most maximally flat response in an anechoic environment based on the number of drivers, the thiele small parameters and the allotted dimensions specified in the user’s input fields. Fast forward to 2:53 in the video above to follow along—the rest is a showcase of a specific subwoofer. Solving for length of vent or port. Ported - I'm more interested in something like a DIY sonosub than a typical boxed subwoofer. Diameter, f s, Q ts and V as must be entered. A subwoofer contains 2 vents of length 5 cm and diameter of 8 cm. Box Tune Calculator allows you to create speaker enclosures on the go. The problem with both of these is they only consider box volume. Now, enter your Xmax figure (in millimeters), and the frequency that you need to tune your vent to. Free Skar Audio 10" Custom Aero Ported Sub Box VVX-10v3 IVX-10v2 SDR-10 Raw No Carpet. Often these are construsted with the face or rear wall of the encloser angled to prevent standing waves within the enclosure, but since many sealed enclosures are so small this is unlikely to occur and may be a simple box shape as shown, but lining the walls with an acoustic damping material is still recommended. The filler inside was to prevent speaker box rattling. Compatible subwoofer ORION HCCA12. We are a leading Svs Sb 2000 Subwoofer discounter, find a wide Svs Sb 2000 Subwoofer deals for sale on Ebay. 5 and a very low Fs, you should be able to obtain a smooth and strong response to a lower frequency than with a sealed box, provided it is of adequate size and properly tuned. Calculate for Box Enclosure Tuning Frequency Calculate Air Compliance Calculate Speaker Resonance Frequency Calculate Enclosure Volume or for Box. It entirely depends on what you need from those subwoofers and what you're trying to blend them with and at what crossover point. The volume of a cylinder is pi*r^2*h, or (3. By defining the length from driver to the closed end, you have defined the driver offset: The area from the driver to the open end is divided into 3 sections. Maybe not the most elegant, broadest subwoofer design but - for a small / medium club where I'm wanting to mic a kick it should help keep my EON's from damage and richen things up on the low end. Calculate speaker box volume, port length and other parameters without getting confused in formulas. Boxnotes is a free speaker enclosure design software for Windows. Put it in a 4 cubic foot box with a 12. Use the Driver Displacement Calculator to Determine the Displacement for Your Driver. A divided enclosure would have one subwoofer in one chamber, with many chambers inside one larger box. Ultimate Home Theater Subwoofer Designs I used to think the only way to get ultimate subwoofer bass was to spend thousands of dollars on a prestigious brand of subwoofer. I have been checking out box calculators to turn my sealed subs into ported ones. Loudspeakers Calculator Free field frequency responses of the measured and the generalized loudspeaker (105 mm woofer, bass reflex port back) In the upper section of the calculator the reverberation time within the listening room is calculated depending on the construction, the size, and the furnishings of the room. Method for finding the sweet spot. These Subwoofer Boxes are made with pride in our own facility here at HiFiSoundConnection. High tuned boxes are what you hear at Best Buy and Circuit City. Toggle navigation Topics by Science. The calculator does…Continue reading →. And, finally click the "Calculate Minimum" button to get your results. With a 93dB sensitivity rating, the 12-inch car subwoofer is one of the most efficient subwoofers on the market. Apocalypse AAB-12900. Vb = the internal volume of your enclosure in cubic inches. The formulas for calculating the minimum vent diameter, and the port(s) length for subwoofer enclosures can be found here - round and square vents. The main feature is a calculation of the volume of the subwoofer box, according to his parameters Thiele-Small(FS, VAS, QTS). If room for life has to be made along with the necessity for serious bass, the Compact Box Recommendation is the one for […]. See similar items. For example, I have an 8" woofer that in a 4 cu-ft box has an F3 of about 20 hz. Pioneer TS-SW2502S4 - 10" Shallow-Mount Subwoofer with 1,200 Watts Max. This calculator will determine what length port to use in your ported enclosure. News, email and search are just the beginning. Termpro enclosure design software designer subwoofer speaker box calculator thiele small xtzsub1217 06w car pdf ideas swedish dont like. If the EBP is less than 50, then a Sealed Enclosure is recommended. Get a loudspeaker enclosure modelling application and enter all the parameters. Custom Ported/Vented Sub Enclosure Box for a 2004-2015 Ford Mustang - 2 12" Subs 5. Basically as a subs output increases more air is pumped in and out of the port. A ported subwoofer enclosure includes a port which allows the back waves to be emitted along with the front waves to generate a higher total sound output. inch slot port and 13 m/s with 60 sq. These typically have an excellently low group delay in their passband, and provide even more augmented output than a vented box. Latest updates on everything Subwoofer Inputs Software related. Read the Speaker Box Design Tutorial. Fast forward to 2:53 in the video above to follow along—the rest is a showcase of a specific subwoofer. Wonderful box! I have it paired with a Phoenix gold six line 12" subwoofer. Speakers, subwoofers, amplifiers for sale. You can use the following approximations: 9. 1 I have a 2. Fits Regular-Cab/Regular cab Trucks 10" Single Ported Sub Box. A subwoofer contains 2 vents of length 5 cm and diameter of 8 cm. It is better than other box calculation software because it also considers approximate cabin gain, power compression, port compression and other non-linearity. The Sealed vs. This DC resistance has an influence on total Q facto Qts and, therefore, needs to be considered. 500 watts with duct. When calculating port velocity (noise?) in WinISD, you can create a circular or square port and compare the two. But there's a tradeoff: ported boxes can be considerably larger than their sealed box counterparts. Connect the left channel on the subwoofer to the left channel on the amplifier and the right channel on the subwoofer to the right channel on the amplifier. ­The 2009 Ford F-150 SuperCrew showed some interesting changes in truck design by getting rid of the drive shaft hump in the center of the floor. Manuals Directory ManualsDir. My original system design blew my budget being 4 meso 8s on 2 AT1400. See product details. Use speaker drivers that will match one another based on T/S parameters. Max output 101 dB, f3 35 Hz. 75 to 1 inch thick. If my total box volume (VAS) is 3 cubic feet and the woofer takes up. I can't really give any tuning suggestions without knowing details. Box-Port Design is another good speaker design software for Windows. I think the easiest way to define speaker impedance is to say that it is the resistance any speaker gives to the current and voltage being applied to it. The Best Diy Kid Projects Free Download. Subwoofer Size Chart – Car Subwoofers Sizes with Features. 14)*(2)^2*15 = 188 cubic inches. You may be able to replace the port with one with radiused and tapered openings to minimise the turbulence if the X-sub does not already have them(I am not familiar with x-sub). Great job! Im remebering my teenager years. Selling my beloved Martin Logan Dynamo 500 sub, as I am having an awfully difficult time trying to not rock the building I live in by turning the sub levels up by 0. Clifton Park, NY 12065 [email protected] 2) Measure the width, height, depth and thickness of the box you want to stick a port in, entering this information into the 'Volume Calculator '. As an input, it takes values of T/S Driver Parameters such as Vas (volume of air), Fs (frequency), Pe (Thermal power), Re (DC resistance of the voice coil), Qes (Electrical Q of loudspeaker), and Q of loudspeaker (Qts). Ported Calculator. za, Don't pay more by finding the best deals in za. The BoxAdvisor is our recommended subwoofer enclosure database. 2016-Up Nissan Titan Crew Cab Dual 10" Ported $225. In fact, speaker impedance can often be referred to as a speaker’s resistance. Bass-reflex enclosures are also called "vented-box design" or "ported-cabinet design". My original system design blew my budget being 4 meso 8s on 2 AT1400. Its going to be for 2 D412 MMATS professional audio Pro cast series rated at 600 watts rms. Bank of england cancels doctor who. #N#Because Nothing Beats the sound of RE Audio amplifiers, speaker systems, and subwoofers. inch slot port and 13 m/s with 60 sq. The above power response estimate for the L-07 is an improvement over the 2-way satellite/subwoofer system. Subwoofer Design Toolbox. Each subwoofer will have a specific frequency they are designed to run at for maximum output. Just calculate the volume of the round (PIEr^2 *h) or slot (Length*Width*Height) port and add it to the original volume of the box you typed into the calculator. Super Crew Sound is your site for Truck Parts and Accessories including BedRug Truck Bed Liners for Chevy, Dodge, Ford, Nissan, Toyota and Honda. Another cool thing about ported speakers is that you have more ways to match the speaker to the room. 7 ft^3 box, can you guess what sub?). The subwoofer box itself acts as an amplifier, yielding to more bass than a sealed enclosure (3 to 4 dB). Sealed boxes do the job, but to really get the most from your sub­woofer, you should look into some­thing ported. To calculate the phase shift, you need the frequency and period of the waves. The ported side tunes the upper frequency response and output level. The volume of a cylinder is pi*r^2*h, or (3. After all connections and settings have been verified, turn on the subwoofer. The program has individual inputs for bracing and subwoofer displacement, port ratio box, metric in millimeters and centimeters. speaker building and usage related. Radius is one-half of the diameter as shown in the following equation. The Polk HTS 10 subwoofer enhances home theater and music listening with powerful deep bass. This should allow you to extend part of the port tube outside the enclosure without it being visible. Port calculations used to be a black art but today the science is well known and there are many online port calculators that take the complicated mathematics and make it easy to implement for. The "Minimum Diameter" box is for round ports. 65 Cubic Ft. Using the12volt slot port length calculator with these numbers: 24, 4, 6. Diameter, f s, Q ts and V as must be entered. If the port is too small, the air has to move through it. Verify connections, turn on the subwoofer, and set the volume. 5) before entering the width, height, depth, or diameter, and thickness into any of our speaker box. I think this is common to ported enclosures and little can be done about it. Determine the Dimensions of your Speaker Box based on the Calculated Volume. 5 and the Port, witch its the wood making up the port and the air space inside the port takes up. With its rock solid construction, airtight design, blind dado assembly, and internal bracing system, this enclosure will surely leave you and your car shaking. 99 was $449. Online speaker building calculators by Hi-Fi Speaker Design. The colors of the curves in the diagrams for frequency response, step response, group delay and voice-coil impedance have the following meaning: Black: Vented-Box with Thiele/Small-Parameter (Bullock alignment). The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to other alignments. The slot port offers you the largest amount of port area that consumes the least amount of baffle board space. Or this calculator for quick references. This box has been divided in half for two subwoofers. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES: Calculate your own port(s) length for subwoofer enclosures here - round and square vents. ♦3/4" USA MDF. It's interesting to note a few basic factors that still fuel the sealed vs. 5" subwoofer driver and the Dayton SA70 70 watt subwoofer plate amp. The type of music you listen to, the specifications of the subwoofer(s) you choose, the available space to install your subwoofer enclosure, and other contributing factors all play a role in determining whether a sealed or ported (vented. Option is available if you have selected the box type - vented, and port type - slit. Please keep in mind that the data produced by this calculator is simply a guideline. Get the best deals on 10" Car Speaker and Subwoofer Enclosures when you shop the largest online selection at eBay. 544 in do you have any way to check these numbers??? will they work??? I used this calculator to create the box (ported box calculator):. You can save up to 1,590 € for the multi-award-winning high-end subwoofer model Velodyne DD-10 Plus now and only for a short time: Velodyne DD-10 Plus instead of 4. A 1000 ohm, 5% resistor. This top-notch product by QPower will help maximize performance of your subwoofer, while offering it additional protection from external impact. To calculate the volume of the port, first we must calculate the area of its circular cross-section. Your price for this item is $ 139. The ported box will provide virtually no damping below the port frequency (all of the control will be provided by the woofer's suspension). You may be able to replace the port with one with radiused and tapered openings to minimise the turbulence if the X-sub does not already have them(I am not familiar with x-sub). Resistors, cables or a coils that are being used to connect a loudspeaker show a DC resistance. 65" cut? i just dont understand this, as this number seems way too small to be an actual port. Ported & Vented Subwoofer Boxes Information Ported Subwoofer Enclosure Information: Ported sub boxes are typically the culprit behind the guy you can hear from 2 blocks away. To reduce port noise, this applies to both round and slot ports. I have divided subwoofers into 8 inches, 10 inches, 12 inches, and 15 inches category, along with this, I have added all the important features and also added the best-suited cars for every subwoofer size. You can do it, but chances are it will sound terrible. Designing of the Enclosure Custom Ported Enclosure Build Front&Rear panels are 28"width*18"height Left&Right side panels are 16. Speaker Placement & Positioning Why should you decide to buy new loudspeaker systems if you did not use the full potential of the speakers you currently own? And how come that some people are complaining about a hole in the middle of the sound stage and blame the recording engineers of. Box-Port Design is another good speaker design software for Windows. See our FAQs page for commonly asked questions. Joined Jan 8, 2020 Messages 39 Points 18 Location India. Common Tuning Frequencies Sound Quality(SQ): 20hz - 28hz. some one can help me making ported enclosure for JBL W15GTI MKi keeping qtc. Let me get more specific You have a sub that requires a 1 cubic foot sealed box. Subwoofer box calculator online. Every subwoofer we build is designed to get low and stay musical. Subwoofer Size Chart consists of 4 different types of subwoofers. 7 ft^3 box, can you guess what sub?). I can't really give any tuning suggestions without knowing details. A transmission line enclosure can yeild better low end response than a traditional ported cabinet using the same driver. We can provide you with comprehensive Subwoofer Box Calculator for online creating a high performance subwoofer enclosure. When Should You Use Port Plugs? We have recently started shipping our newest product, the M100 Floorstanding Speaker , which is the first model of ours to come with port plugs. Overview: This is a calculator for designing a L-Slot Vent Bass Reflex Enclosure. This creates a highly efficient system with two resonance frequencies. Sizes: 10", 12", and 15" (Dual 2/4 ohm) Dual Composite 2-piece Cone. Build a ported box, sealed box for your low-frequency speaker. The diagram shows a typical 5. Measuring Speaker T-S Parameters. There is a delicate line to be walked between overstuffed cabinets with a lifeless over damped sound and understuffed cabinets with timing errors caused by delayed information from the out-of-phase cone rear surface entering the listening room via the cone or port, plus timbre inaccuracy caused by emphasis of specific frequencies. 5) before entering the width, height, depth, or diameter, and thickness into any of our speaker box. Brand: Skar Audio The easiest way to calculate this measurement is to multiply the height, width, and length measurements. #N#Get help for the Sealed vs. The ProSub 400 compact, powerful subwoofer features a 8" driver and 150-Watt amplifier, for the kind of explosive special effects and full-range music that make your home entertainment system fun and exciting to listen to. However, the ported enclosure allows a more efficient rendition and, provided IMHO that you use a subwoofer with a Qts of between 0. Ported enclosures use a tuned port or vent to increase output at lower frequencies. With an Isobaric, the box could be 2 cu-ft for the same F3. PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES: Calculate your own port(s) length for subwoofer enclosures here - round and square vents. At low frequencies, increasing SPL requirements demand ever-greater woofer excursion from a sealed system, which limits output and can increase distortion. Online speaker building calculators by Hi-Fi Speaker Design. For my uses, a sub doesn't need it to do anything but woof in a very tight band. Manuals Directory ManualsDir. Add a thump to your sound system by shopping online for Subwoofers at Amazon India. 5 out of 5 with 106 reviews. The calculation of sealed, bass-reflex, bandpass boxes by Thiele-Small parameters. Bought Ct1500. Then into the laboratory. 4 out of 5 stars 1,469. Connect the subwoofer RCA cables to the amplifier. Make a subwoofer enclosure plan. Just calculate the volume of the round (PIEr^2 *h) or slot (Length*Width*Height) port and add it to the original volume of the box you typed into the calculator. Speaker cabinets - last updated 26/08/06 21:34:52 One of the questions I get asked frequently is how to design a speaker cab. With height and modest circumference, they match the enclosure volume of their stout ported-box counterparts. Currently, its maximum size for display is 35" x 16" x 18". Dodge 02-18 Quad/Crew Cab Subwoofer Box with recessed baffle. As part of our new powered subwoofer measurement protocol, we will be offering a room size recommendation for each subwoofer tested. " The utility simply calculated net enclosure volumes and port dimensions off one 'alignment'. Click "Download" to get the full free document, or view any other Navigator PDF totally free. Design your box with few steps using Speaker Box Lite. 4 out of 5 stars 1,469. In-wall speakers tend to not have much bass because of the lack of cabinet volume and small woofer drivers. 5 Ft^3 of air space (Boston Acoustics G3's, for example). Radius is one-half of the diameter as shown in the following equation. You have a. com Q If I have a budget of $1500 to buy a subwoofer, should I buy one great sub or two good $750 subs? They would be used equally for both movies and music. To do this we will use the famous πr²(Pi X Radius Squared) formula. I realise that box volumes will need to be different, eventually, but I cant understand why different calculators give such wildly different port size and length results. If the frequency is right, the reflected sound reinforces the radiated sound, leading to a resonance. Sealed Subwoofer Speaker BOX DESIGN - Qtc Calculator: Determine the Qtc of your speaker enclosure using this free calculator. Subwoofer Vent Length Calculators: Calculate Length of Vent or Port. The calculator…Continue reading →. I use a subwoofer myself. The correct design of a subwoofer enclosure is not as just a box you put the woofer into - it should also take into account the speaker's size, shape, and volume, as well as where it will be placed. Whether you’re considering a basic sealed or ported model, or stepping into our woofer specific solutions, all our enclosures are built to deliver peak performance from your subwoofer system. The SEX v2 SERIES is an improvement in every way over our most popular and best selling subwoofer series. Calculate Tapered Quarter - Wave Tube. Using your current speaker and power wire, current amp power is calculated, allowing you to see any potential losses (in Watts) with undersized cables. Push the box size smaller and the port longer, the port output (and velocity) will be further damped. I was told to buy a sealed box as I have an extremly small trunk, and tha. A ported enclosure in which the woofer plays into a tune-ported enclosure that acts a low pass filter. Ford F-250/ F-350 Supercrew Cab 99-07 Dual BTS Subwoofer Box with Amp Rack. Our plans taken from past issues of our Magazine include detailed instructions cut lists and illustrations - everything you need to help you build your next project. Precision Port 4" Flared Speaker Cabinet Port Tube Kit The unique flared-end construction of the Precision Port™ system enables it to outperform any standard port tube on the market. All of our Subwoofer Boxes are tuned by professionals for the optimal output for their respective budget and applications. Result will be displayed. The type of music you listen to, the specifications of the subwoofer(s) you choose, the available space to install your subwoofer enclosure, and other contributing factors all play a role in determining whether a sealed or ported (vented. It will give you frequency response graphs for different sensible tuning frequencies: The higher the tuning frequency,. , it is possible to cause damage to the sub well before power levels approach the maximum power ratings of the subwoofer. General; Text; Date (DMY) Date (MDY) Date (YMD) Back Next >> Paste Cancel. as-418 Quad 18-inch Isobaric Subwoofer. The display will continue to draw for sizes larger than that, but the drawing will be clipped by the viewing window. This DC resistance has an influence on total Q facto Qts and, therefore, needs to be considered. Here is a good example of a port area calculator using those formulas: Car Audio - PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES Those calculators have a big flaw though, they assume you are going to be pushing a sub to its Xmax. Online Loudspeaker Enclosure Calculation. The SEX v2 SERIES is an improvement in every way over our most popular and best selling subwoofer series. Q ms and Q es are optional. Thread starter Bhoot; Start date Feb 7, 2020; Bhoot Member. Conventional tubes suffer from nasty turbulence at the entrance and exit of the port, producing unwanted noise and poor sound quality. This calculator will convert a circle port into square inches in order to build a slotted port for your woofer box. Dodge 02-18 Quad/Crew Cab Subwoofer Box with recessed baffle. The browser you are using will launch a free subwoofer port calculator software on screen for you. Custom subwoofer enclosure build. S elect whether you are using a round or slotted port for you box design. High tuned boxes are what you hear at Best Buy and Circuit City. HP CONNECTOR CHART USB Cable Port How it’s used Transmits data and comes in standard, audio adapter, and 2. Speakers designed for small enclosures might not work well in a ported enclosure because the port would need to be longer than the box itself. Get a loudspeaker enclosure modelling application and enter all the parameters. The idea of a ported box is that the speaker port pushes (or pulls) air at the same time as the woofer, reinforcing bass. Box Tune Calculator allows you to create speaker enclosures on the go. 0 cubic ft one, what exactly are the risks and/or consequences? Also, what would happen if a port is too small for the sub? what if the port is too big (too wide/long)?. BandPass - This is a topic that got started on another thread, and I thought I would ask it here in its proper category. You have a. Everyone understands that the box is an. You can save up to 1,590 € for the multi-award-winning high-end subwoofer model Velodyne DD-10 Plus now and only for a short time: Velodyne DD-10 Plus instead of 4. LOUDSPEAKER ENCLOSURE FORMULA'S. E nter the number of ports you are using, the internal airspace of your box, then tuning frequency you wish to use, and then hit calculate button. Speaker cabinets - last updated 26/08/06 21:34:52 One of the questions I get asked frequently is how to design a speaker cab. The calculation of sealed, bass-reflex, bandpass boxes by Thiele-Small parameters. Bandpass subwoofer enclosures are often the largest of the three, and include two chambers as well as the possibility of an additional port, depending on the type that is designed. Bandpass Box Calculator determines the front and rear chamber enclosure depth using entered width and length values. ETA Feb 27th Apocalypse DB-SA302 D1/D2. Ford F-250/ F-350 Supercrew Cab 99-07 Ported Dual BTS Subwoofer Box. The Fb of the enclosure does not change with speaker selection, but F3 does. If the frequency is right, the reflected sound reinforces the radiated sound, leading to a resonance. 5"height*13"depth Top&Bottom panels are 28"width*13"depth Rockford Fosgate Power T1 15" Afterward you just have to build the box and wire it up. Conventional tubes suffer from nasty turbulence at the entrance and exit of the port, producing unwanted noise and poor sound quality. The ported box though, at it's tuned frequency, is about +3dB in SPL compared to a sealed box which means it's a cheap way to get more bass. The ported side tunes the upper frequency response and output level. This top-notch product by QPower will help maximize performance of your subwoofer, while offering it additional protection from external impact. 82 inch 2 for one 8 inch woofer. Add a thump to your sound system by shopping online for Subwoofers at Amazon India. Sub Enclosure. I should also note I used total volume in creating my port rather than measuring down the middle due to its folded nature. Various subwoofer designs TinkrPostr: Quick Reference of Basic Electronics Concepts Posters Resultado de imagen para subwoofer box design for 12 inch Subwoofer Forum is a community devoted to home theater and car audio enthusiasts. Mainly the specs of the subwoofer, and the environment it is going into. Add to Cart. Ported & Vented Subwoofer Boxes Information Ported Subwoofer Enclosure Information: Ported sub boxes are typically the culprit behind the guy you can hear from 2 blocks away. I'm not the best source of info in the world for this, so luckily Michael Sabolish has come to the rescue with an excellent write up for you all. Taking it all together, this means the port and the driver outputs reinforce at only low frequencies around 50 Hz or so. View pictures, specs, and pricing & schedule a test drive today. 1's so I went with another brand of 8's in single 4 ohm voice coils that I had never used but the specs were good ( DS18 🤫 ) and elected for one1500. --The following are links that illustrate how each ported box is taken into effect in the calculator (sub and port position can be upwards with the same effect): 1 - Port with 0 common walls: 2 - Slot port with 1 common wall:. 618 provides cancellation of resonating frequencies inside the enclosure. The surface area and length of the port are crucial to the tuning. The correction factor for slot port total length is 1/2 the height, added to the port length. Ported Enclosure: The woofer can also be used in a 1. This calculator can solve for one piston excursion parameter while changing the other variables. 1d, but I will soon upgrade to the 2400. " There are several ways to solve this problem and several "correct" answers. For a 10-inch woofer, the volume recommendation is 0. Use the largest diameter port as the design allows. Ported speaker are the most common as they are cheap to build and. Eutelsat 21B, two new transponders with programs for Erthrea and Sudan. Bass Reflex Box Calculator with the possibility to customize the Box Volume. The ported side tunes the upper frequency response and output level. If you wire one subwoofer to one amplifier, your matching calculation is straight forward. The 2016 Comp 12-Inch Subwoofer Enclosure comes loaded with a single 4-Ohm terminal. Use a 3" precision port. dividers, braces & vents. Peak particle velocity with that amp and driver, in a box under 2. Speakers designed for small enclosures might not work well in a ported enclosure because the port would need to be longer than the box itself. Any customer not meeting the residency restrictions will receive a dealer discount in the same amount of the manufacturer's rebate. Ported enclosure: These are also called bass reflex enclosures. Question in titleIf a subwoofer is meant for a 1. Shipping was a little expensive (30. SMD (SteveMeadeDesigns) Sticker! (3 Pack) (Printed Vinyl) SMD FB-2 Double ANL Fuse Block (High Temp Injection Molded Body) SMD Triple LED Meter Single Din Kit (Build Your Own Combo Pack) *PRE-ORDER* SMD IM-SG+ (Impedance Meter / Signal Generator PLUS) $439. Svs 5 year. Often if you want to get low tuning in a small enclosure, an adequate port will just not fit. 5" long port (or a variation of this size) with 3/4" round overs/coves in all corners that could impede airflow. It not only makes us FEEL the music but also makes us a part of the song itself, as our bodies bathe in a sea of low frequencies, awakening something powerful within each listener. Ported subwoofer enclosures. 13inBut when you change the option of slot port fro. Ported enclosures use a tuned port or vent to increase output at lower frequencies. R = the inside radius of your vent tube. This is where the SB-4000 excels and the limitations of the size are pushed aside. The formulas used in the calculator create a design that suggests the most maximally flat response in an anechoic environment based on the number of drivers, the thiele small parameters and the allotted dimensions specified in the user's input fields. Then into the laboratory. Featuring a strong, thought-out. I run 4 altec 808-8a tops, ported band pass subs(I made), the low mid bass was getting lost in. Port Noise. Guaranteed by Thu, Feb 27. The formulas for calculating the minimum vent diameter, and the port(s) length for subwoofer enclosures can be found here - round and square vents. Perfect for either home theater or stereo applications, the Dynamo 500 is solidly built with high-density materials to minimize. Bank of england cancels doctor who. inches of aero port, there should be no difference. pic hide this posting restore restore this posting. My original system design blew my budget being 4 meso 8s on 2 AT1400. The port length will be the same as the round port. Code to add this calci to your website Just copy and paste the below code to your webpage where you want to display this calculator. This sub sounds great, fills the room. Online speaker building calculators by Hi-Fi Speaker Design. Termpro enclosure design software designer subwoofer speaker box calculator thiele small xtzsub1217 06w car pdf ideas swedish dont like. ported enclosure with a 3" diameter, 10" long port, and tuned to 37Hz. Enter your search terms Submit search form : Web: www. SOLD IN-STORE ONLY. Please keep in mind that the data produced by this calculator is simply a guideline. Calculate Your Enclosure Here To use this form, enter the Q ts , V as , and F s parameters for your speaker in the boxes below. GTX122 - 12" 700 Watts RMS Dual 2 Ohm Subwoofer. Subwoofer ports have to flow a lot more air than their conventional speaker counterparts.